Hits
630 meter antenna Limited edition
Due to the increase of sunpanels and PLC devices, the HF radio spectrum is more and more polluted. Add to it that in NL there is certain group of sunpanel "pioneers" who consider themselves capable of installing these devices by themselves
post 10 May 2024
Antenna 136KHz Links →
Field strength meter for the 137 kHz
The power radiated by an antenna is equal to the radiation resistance multiplied by the antenna current squared. Measurement of antenna current can be done in the 137 kHz band by for instance a thermocouple ammeter or other means
Info about our 500 kHz installation
Vertical antenna built with, about 22 meter high vertical pipe, with 4 top cap wires at a total length of 18 meter
Akita Grabber
Transmitting station 2ele Delta-Loop for 160m T-type for 2200m @50m high
L. F. Transmitter using Direct Digital Synthesis
I've recently changed my LF driver from one which covers the band in 100 Hz steps
LF activity,experimentations of British amateur radio station, G3XDV
I have re-erected the mast at the house end and reinstalled my inverted-L Marconi, so am back on the air again
70
The power radiated by an antenna is equal to the radiation resistance multiplied by the antenna current squared. Measurement of antenna current can be done in the 137 kHz band by for instance a thermocouple ammeter or other means
Vertical antenna built with, about 22 meter high vertical pipe, with 4 top cap wires at a total length of 18 meter
Transmitting station 2ele Delta-Loop for 160m T-type for 2200m @50m high
I've recently changed my LF driver from one which covers the band in 100 Hz steps
I have re-erected the mast at the house end and reinstalled my inverted-L Marconi, so am back on the air again
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
Pcs Electronics RF power amplifiers-pallets archives-ABC of FM AM DAB+ DRM radio transmitters